After 2 different csrs assured me that my super-old platinum card would not prevent me from getting the bonus I applied (of course I don't trust csrs but it's worth a shot and I can take the hit at this point). Oddly, no instant approval; Chase has always been good for at least an instant $20k in the past. Wonder if the BA card had anything to do with it.
Edit: It took 5 1/2 years but this is post 2k. Seems like a long time.